Sticking to the world of music, today's word is mondegreen. You may have never heard or read this word before but it refers to something that you are certainly familiar with.
A mondegreen is simply a word or group of words that a person mishears in a song. (You can listen to the pronunciation of the word here).
A famous example of a mondegreen is the title of the well-known series of travel guides, Lonely Planet. The founders of this series, Tony and Maureen Wheeler, gave their guidebooks this name after they heard the words lonely planet in a song. It was only later that they realised that the real lyrics were lovely planet.
Take a look at this hilarious Youtube video of Nelly Furtado's I'm like a bird:
And this video of Livin' la vida loca by Ricky Martin.